Myra was very suspicious because she senses something odd happening in this place.. if something nasty happens to Obi now much probably it won’t be a coincidence – dead people don’t tell a thing (well, here it can be different).

As Kory described about the nightmare, it’s “an evil spirit that inhabits dead animal skulls”. Its shadow body can’t be manifested in daylight (its only weakness), making it easier (and perhaps safer) to be handled. The evil red glow in its eyesocket on last strip means it’s still there.

So, the nightmare, being a spirit in a skull, doesn’t seem like it would just eat meat from a dead animal. So, they, what… catch a deer and let the nightmare crush it while it sees visions of the worst thing a deer mind can conjure up? (Wolves, I’d imagine.)